Reducing evaporation losses - opportunities for cost effective water savings

Schmidt, Erik (2009) Reducing evaporation losses - opportunities for cost effective water savings. In: Irrigation Australia 2009: Irrigation Australia Irrigation and Drainage Conference: Irrigation Today - Meeting the Challenge, 18-21 Oct 2009, Swan Hill, Australia.

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Annual evaporation losses from irrigation storage dams and channels are significant: it is estimated that there are more than 2,000,000 farm dams across Australia (Australian Water Association, 2006) representing some 8,000,000 ML water stored. Annual evaporation losses from these storages are estimated to be around 1.32GL/yr and up to 2.88GL/yr (Baillie, 2008).

This suggests investing in infrastructure to reduce such evaporative losses would be an attractive option for modernising irrigation systems. Various products are already being used commercially for evaporation management, but come at high capital cost and are not considered appropriate for large areas.

This paper discusses opportunities for cost effective water savings using evaporation mitigation technologies. Technologies for measuring seepage and evaporation losses from dams are described and the economic viability of investing in evaporation control products is discussed, using case studies. The performance of different products is compared using an online Economic Ready Reckoner for evaporation mitigation systems and data from the case studies.

The CRC for Irrigation Futures has been researching the potential for using chemical monolayers for evaporation management since 2004. A brief review of this research is provided, including an assessment of the performance of monolayer products, factors affecting performance, and the development of monolayer application, monitoring and control systems.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: No
Item Status: Live Archive
Additional Information: Authors retain copyright.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 02 Jul 2010 02:48
Last Modified: 05 Dec 2016 00:56
Uncontrolled Keywords: evaporation; water resources; monolayer
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090410 Water Treatment Processes
07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070199 Agriculture, Land and Farm Management not elsewhere classified
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
Socio-Economic Objective: D Environment > 96 Environment > 9609 Land and Water Management > 960913 Water Allocation and Quantification

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